The Regal® clematis grow to approximately 150 - 200cm (5 - 6.5 ft) in the garden and will produce flower for nursery/garden centre sales. Blooms are mostly double or semi-double over a long period. The flowering period is from late spring into summer and again in autumn. The flowers in autumn are also double or semi-double; a rare quality for clematis. In the garden these clematis are best grown through wall trained shrubs/roses or in containers. Place them in a sunny or semi-shade location with shaded roots. These clematis should be lightly pruned by reducing top growth by 1/3 each spring.